Installation guide 970 SmartRadar ATi March 2004 Part no. 4416.717_Rev.1 Enraf B.V. P.O. Box 812 2600 AV Delft Netherlands Tel. Fax E-mail Website : +31 15 2701100 : +31 15 2701111 : info@enraf.nl : http://www.enraf.
Preface The 970 SmartRadar ATi is a radar-based level gauge for liquid storage tanks. This installation guide is intended for technicians involved in the mechanical and electrical installation of the Enraf series 970 SmartRadar ATi. EC declaration of conformity Refer to the EC declaration of conformity, shipped with the instrument. Note: All connections to the instrument must be made with shielded cables with exception of the mains, alarm output and Enraf field bus cable.
For FCC compliant versions only Warning This device complies with Part 15 of the FCC Rules and with RSS-210 of Industry Canada. Operation is subject to the following two conditions: (1) this device my not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Warning The radiated output power of SmartRadar 970 LTi is far below the FCC radio frequency exposure limits.
Safety Safety Safety aspects of 970 SmartRadar ATi Warning Do not use the instrument for anything else than its intended purpose. The housing of the 970 SmartRadar ATi is explosion proof: • • II 1/2 G EEx de [ia/ib] II B T4; KEMA 03ATEX2468 X; certified by KEMA, Netherlands Class I, Division 1, Groups B, C, D T4, according to ANSI / NFPA 70 (Factory Mutual) Environmental conditions for the SmartRadar ATi are: ambient temperature : -40 to 60 °C (-40 to 140 °F) operating pressure : max.
Safety Personal safety The technician must have basic technical skills to be able to safely install the equipment. When the 970 SmartRadar ATi is installed in a hazardous area, the technician must work in accordance with the (local) requirements for electrical equipment in hazardous areas. Warning In hazardous areas it is compulsory to use personal protection and safety gear such as: hard hat, fire-resistive overall, safety shoes, safety glasses and working gloves.
Mechanical installation Mechanical installation Antenna and tank separator should already be installed (refer to installation guide SmartRadar antennas). Install SmartRadar ATi housing on tank separator as follows: 1) Place housing on tank separator; mind locking pin! 2) Turn coupling nut manually securing the housing.
Electrical installation Electrical installation The entire electrical installation shall be in accordance with the International Standard IEC 79-14 for electrical equipment to be installed in hazardous areas. Warning Make sure that all power to the instrument is switched off before opening the covers of the 970 SmartRadar ATi. Failure to do so may cause danger to persons or damage the equipment. All covers of the 970 SmartRadar ATi must be closed before switching on the power.
Electrical installation Preparing SmartRadar ATi for electrical installation Mains supply, fuses and external mains switch Mains supply for 970 SmartRadar ATi can be: • 110 - 240 Vac 45/65 Hz, or • 24 - 64 Vdc Fuses Power rating : max. 25 VA (18 W). Supply variations of +10% and -20% are allowed. The 970 SmartRadar ATi is internally fused on the primary side. Refer to figure 2. Fuse values, in accordance with IEC 127-2-3, are: • 1.
Electrical installation Cable glands / conduit Cable glands: Explosion proof (Ex-d) or increased safe (Ex-e) cable glands must be used, depending on local requirements. Refer to the Ex-marking on the identification label of the 970 SmartRadar ATi to determine which type of cable glands is required. Note: Mount the glands according to the supplier’s instructions.
Electrical installation Lay-out terminal compartment The terminal compartment at the rear of the 970 SmartRadar ATi is divided into a non-intrinsically safe and an intrinsically safe part. Cable entries are ¾” NPT. Intrinsically safe cabling may only enter at the left-hand side cable entry, marked Ex-i (figure 3). I.S. part (blue terminals) non I.S. part (grey terminals) Warning Only open the terminal compartment cover (rear cover) when the power is switched off.
Electrical installation Selecting external or internal loop supply is done by placing the connector with the brown wires for: • external supply in: CN1 of ICU_HPO board (passive loop) • internal supply in: CN2 of ICU_HPO board (active loop) With active loop, the supply voltage in the loop is: 20 Vdc (±5%). With passive loop, the minimum supply voltage is 8 Vdc; the maximum supply voltage is 64 Vdc. Supply voltages over 30 Vdc, require external series resistor (figure 4).
Electrical installation Figure 5 Non-intrinsically safe connections Note: Use either AC or DC supply (refer to instrument label). When using RS-232C or RS-485 communication, Enraf field bus signal is not available. ® When using HART communication and/or analog level output, Enraf field bus signal is available.
Electrical installation Figure 6 Detailed communication wiring Installation guide 970 SmartRadar ATi Page 13
Electrical installation Figure 7 Grounding cable shield with RS-485 and HART ® / analog output signal ® The shielding of the RS-485 and HART / analog output signals must be connected to ground at both sides of the cable. There can be a potential difference between tank ground and ground in the control room. Therefore, capacitors should be applied in the shield grounding between tank and control room, preferably in (one of) the junction box(es). Capacitance value: 10 to 100 nF.
Electrical installation Intrinsically safe connections The cable for the intrinsically safe option(s) should be fed through the cable entry at the side of the intrinsically safe (blue) terminals. Blue marked cables are recommended for the I.S. options. If more than one connection is to be made, an external junction box is required. Caution The intrinsically safe options described in this section have been certified as explosion-proof.
Electrical installation Figure 9 Intrinsically safe connections Note: If pressure transmitters are connected to HART input 2, it must be verified that the maximum values for current and power of the ICU_HPI option board HART input 2 circuit are not exceeding the maximum values of the connected pressure transmitters. Refer to Appendix B. If the values of the HART input 2 circuit are too high, then connect the pressure transmitters to HART input 1 and the 762 VITO Interface to HART input 2.
Appendix Appendix A Dimensional drawing 264 (10 3/8" ) ø260 (10 1/4" ) 100 (3 15/16" ) ** ** 35 (13/8") (space needed to remove cover) 100 (3 15/16" ) (space needed to remove cover) 159 (6 1/4" ) 128 (5 1/16" ) 143 (5 5/8" ) 76 (3") 105 (4 1/8" ) * ** 56 (2 3/16" ) ENRAF * Cable entry 3/4" NPT, Ex-i (1x) ** Cable entry 3/4" NPT (2x) ** Optional IR connector Installation guide 970 SmartRadar ATi Page 17
Appendix Appendix B ATEX Approval The terminal compartment of the 970 SmartRadar ATi has been ATEX approved as explosionproof and as being increased safe. The type of cable glands that must be used: For protection type increased safe EEx e approved glands are to be used. For protection type explosion-proof EEx d approved glands or conduits are to be used.
Notes Appendix C Related publications Model 970 SmartRadar ATi Safety instructions for installation, commissioning, operation and maintenance Installation guide SmartRadar Antennas Instruction manual 970 SmartRadar ATi Installation guide VITO sensors Installation instructions for MERCAP Side mounted water probe Installation guide 977 TSI Tank Side Indicator Installation info 003 (Installation HIMS system) Installation guide 970 SmartRadar ATi Page 19
Delftechpark 39 2628 XJ, Delft : +31 15 2701 100 Tel. E-mail : info@enraf.nl Website : http://www.enraf.com P.O. Box 812 2600 AV, Delft Netherlands We at Enraf are committed to excellence. Your Enraf distributor Information in this publication is subject to change without notice. Enraf B.V. Netherlands. Enraf is a registered trademark.
